114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)parse.c 8.1 (Berkeley) 5/31/93";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include "externs.h"
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static int hash __P((const char *));
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static void install __P((struct wlist *));
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struct wlist *lookup __P((const char *));
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void
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wordinit()
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{
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struct wlist *w;
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for (w = wlist; w->string; w++)
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install(w);
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}
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int
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hash(s)
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const char *s;
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{
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int hashval = 0;
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while (*s) {
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hashval += *s++;
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hashval *= HASHMUL;
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hashval &= HASHMASK;
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}
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return hashval;
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}
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struct wlist *
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lookup(s)
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const char *s;
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{
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struct wlist *wp;
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for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next)
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if (*s == *wp->string && strcmp(s, wp->string) == 0)
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return wp;
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return NULL;
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}
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void
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install(wp)
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struct wlist *wp;
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{
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int hashval;
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if (lookup(wp->string) == NULL) {
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hashval = hash(wp->string);
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wp->next = hashtab[hashval];
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hashtab[hashval] = wp;
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} else
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printf("Multiply defined %s.\n", wp->string);
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}
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void
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parse()
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{
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struct wlist *wp;
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int n;
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wordnumber = 0; /* for cypher */
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for (n = 0; n <= wordcount; n++) {
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if ((wp = lookup(words[n])) == NULL) {
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wordvalue[n] = -1;
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wordtype[n] = -1;
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} else {
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wordvalue[n] = wp -> value;
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wordtype[n] = wp -> article;
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}
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}
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}
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